Plumbing nut



FIG. 1 is a first perspective view of the plumbing nut according to the present invention;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a second side view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof.

The broken lines depict portions of the plumbing nut that form no part of the claim. 

CLAIM The ornamental design for a plumbing nut, as shown and described. 